00197498-03_UM_SiplaceCA-Serie_EN - 第184页
3 Technical Data User Manual SIPLACE CA-Series 3.12 Vision Cameras From software version SC.708.0 Edition 12/2014 EN -DRAFT 184 3.12.4.3 Fiducial Criteria 3 Locate 2 fiducials Locate 3 fiducials X-/Y-position, rotation a…
User Manual SIPLACE CA-Series 3 Technical Data
From software version SC.708.0 Edition 12/2014 EN -DRAFT 3.12 Vision Cameras
183
3.12.4 PCB Camera, Type 34, Digital
3.12.4.1 Structure
3
Fig. 3.12 - 4 PCB camera, type 34, digital
(1) PCB camera lens and illumination
(2) Camera amplifier
3.12.4.2 Technical Data
3
PCB fiducials Up to 3 (subpanels and multiple panels)
Up to 6 for the "Long Board Option" (Optional PCB fiducials are
output by the optimization).
Local fiducials Up to 2 per PCB (may be of different type)
Library memory Up to 255 fiducial types per subpanel
Image analysis Edge detection method (singular feature) based on grayscale
values
Illumination mode Front-illumination (3 levels, programmable as required)
Detection time per
fiducial/bad fiducial
20 ms - 200 ms
Field of vision 5.78 mm x 5.78 mm
Distance from the focus plane 28 mm
3 Technical Data User Manual SIPLACE CA-Series
3.12 Vision Cameras From software version SC.708.0 Edition 12/2014 EN -DRAFT
184
3.12.4.3 Fiducial Criteria
3
Locate 2 fiducials
Locate 3 fiducials
X-/Y-position, rotation angle, mean PCB distortion
additional: shearing, distortion separately in X and Y direction
Fiducial shapes Synthetic fiducials: circle, cross, square, rectangle, diamond,
circular, square and rectangular contours, double cross
Pattern: any
Fiducial surface
Copper
Tin
Without oxidation and solder resist
Warp ≤ 1/10 of structure width, both with good contrast to
environment
Dimensions of synthetic fiducials
Min. X/Y size for circle and rectangle:
Min. X/Y size for annulus and rectangle:
Min. X/Y size for cross:
Min. X/Y size for double-cross:
Min. X/Y size for rhombus:
Min. frame width for annulus and rectangle:
Min. bar width / bar distance for cross, double-cross:
Max. X/Y size for all fiducial shapes:
Max. bar width for cross, double-cross:
Min. tolerances, general:
Max. tolerances, general:
0.25 mm
0.3 mm
0.3 mm
0.5 mm
0.35 mm
0.1 mm
0.1 mm
3 mm
1.5 mm
2% of nominal dimension
20% of nominal dimension
Dimensions of patterns
Min. size
Max. size
0.5 mm
3 mm
Fiducial environment Clearance around reference fiducial not necessary if there is no
similar fiducial structure in the search area.
User Manual SIPLACE CA-Series 3 Technical Data
From software version SC.708.0 Edition 12/2014 EN -DRAFT 3.12 Vision Cameras
185
3.12.4.4 Ink Spot Criteria
3
Methods - Synthetic fiducial recognition method
- Mean grayscale value
- Histogram method
- Template matching
Shapes and sizes of fiducials/
structures for
Synthetic fiducials
Other methods
For dimensions of synthetic fiducials see section 3.12.4.3
Fidu-
cial Criteria
Min. 0.3 mm
Max. 5 mm
Masking material Good coverage
Recognition time Depends on the method: 20 ms - 0.2s